mockup.json

[
  {
    "name": "endpoint1",
    "type": "dead end",
    "connections": [
      "road1"
    ]
  },
  {
    "name": "endpoint2",
    "type": "dead end",
    "connections": [
      "road2"
    ]
  },
  {
    "name": "endpoint3",
    "type": "dead end",
    "connections": [
      "road3"
    ]
  },
  {
    "name": "intersection1",
    "type": "dead end",
    "connections": [
      "road1",
      "road2",
      "road3"
    ]
  }
]

mockup_with_direction_data.json

[
  {
    "name": "endpoint1",
    "type": "dead end",
    "connections": [
      {
        "road": "road1",
        "direction": "north"
      }
    ]
  },
  {
    "name": "endpoint2",
    "type": "dead end",
    "connections": [
      {
        "road": "road2",
        "direction": "south"
      }
    ]
  },
  {
    "name": "endpoint3",
    "type": "dead end",
    "connections": [
      {
        "road": "road3",
        "direction": "west"
      }
    ]
  },
  {
    "name": "intersection1",
    "type": "dead end",
    "connections": [
      {
        "road": "road1",
        "direction": "south"
      },
      {
        "road": "road2",
        "direction": "north"
      },
      {
        "road": "road3",
        "direction": "east"
      },
    ]
  }
]